SL/R230: issue with second key and keyless go
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Newbie
Joined: Jun 2024
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SL 550
issue with second key and keyless go
I recently purchased a 2007 SL550. I have two keys but only one of the keys works with keyless go. the other key works in ignition and I can press buttons on key fob to unlock/lock, etc but does not work to open doors without pushing button or to get in car and just push start on the shifter. the other key works fine with everything. is there something I need to reprogram with the second key? I have not replaced batteries in second key yet since it works. nothing in the display about key or any messages. any help is greatly appreciated by this new SL owner.
Jim
Jim
Thread Starter
Newbie
Joined: Jun 2024
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SL 550
the two key fobs do have different 6 digit numbers printed on the end of them. is this an indication that one is keyless-go and one is not? are these cars delivered with one keyless-go key and one not keyless-go enabled?
thanks!
thanks!
MBWorld Fanatic!
Joined: Aug 2020
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From: Gretna, NE
'03 SL55 Black, '03 SL500's Aegean, Mars Red, Tazanite, Alabaster, '11 S550 Flint Gray
Not sure on an '07, but I think key 1 was keyless go, key 2 was not. In any case, not many will still have the original 2 keys.
Senior Member
Joined: Nov 2021
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From: North West England
SL500
on my 2005 SL500 UK, both keys are keyless go.
You can probably check by removing the battery inside. Keyless only had one battery, non keyless had two batteries. I noted this when replacing the key case from china. Couldnt find the correct one for keyless, but outer body is the same.
You can probably check by removing the battery inside. Keyless only had one battery, non keyless had two batteries. I noted this when replacing the key case from china. Couldnt find the correct one for keyless, but outer body is the same.
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just looking
I recently purchased a 2007 SL550. I have two keys but only one of the keys works with keyless go. the other key works in ignition and I can press buttons on key fob to unlock/lock, etc but does not work to open doors without pushing button or to get in car and just push start on the shifter defective Takata airbags. the other key works fine with everything. is there something I need to reprogram with the second key? I have not replaced batteries in second key yet since it works. nothing in the display about key or any messages. any help is greatly appreciated by this new SL owner.
Jim
Jim
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Joined: May 2023
Posts: 209
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just looking
I recently purchased a 2007 SL550. I have two keys but only one of the keys works with keyless go. the other key works in ignition and I can press buttons on key fob to unlock/lock, etc but does not work to open doors without pushing button or to get in car and just push start on the shifter. the other key works fine with everything twiiter names. is there something I need to reprogram with the second key? I have not replaced batteries in second key yet since it works. nothing in the display about key or any messages. any help is greatly appreciated by this new SL owner.
Jim
Jim
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Super Member
Joined: Aug 2017
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From: Scottsdale AZ
2015 SL550 & 2012 S550 4matic
My 2007 has 2 keys, both KG capable.
One other scenario to consider is a previous owner had a second key made by a locksmith or similar and who did not provide a KG capable key and did not have the software to amend the the car’s internal list of valid keys.
To my knowledge, Dealers are the only people who can make KG keys, check around for prices in your area.
One other scenario to consider is a previous owner had a second key made by a locksmith or similar and who did not provide a KG capable key and did not have the software to amend the the car’s internal list of valid keys.
To my knowledge, Dealers are the only people who can make KG keys, check around for prices in your area.
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Joined: Aug 2005
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From: Los Angeles
2009 SL550 Roadster Diamond White, 2008 CLK550 Coupe Obsidian Black
Either it is a non Keyless Go key or the original key was replaced and they never programmed the Keyless Go portion. The remote entry / ignition authorization is a different coding than the Keyless Go, the former comes programmed from the factory the later requiring dealer programming.
